<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
    <title>光标永远停留在文字最后</title>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<h2>光标永远停留在文字最后</h2>
<input type="text" id="cursorPos" value="光标永远停留在文字最后">
<script type="text/javascript">
    window.onload = function(){
        var cursorPos = document.getElementById("cursorPos");//绑定两种事件，已达到最大兼容性

        cursorPos.onclick = cursorPos.onkeyup  = function(){//绑定处理事件的函数
            var _vLen = this.value.length;
            if(this.setSelectionRange){//非IE
                this.setSelectionRange(_vLen,_vLen);
            }else{//IE中
                var a =this.createTextRange();
                a.moveStart('character',_vLen);
                a.collapse(true);
                a.select();
            }
        }
    };
</script>
</body>
</html>